added exit in smoke test

    - *print-common-info

    - bash ci/smoke_test.sh

    ### analyze for failures

    - if ! [ -s smoke_test_output.txt ] || ! [ -s smoke_test_output_plc.txt ] || ! [ -s smoke_test_output_jbm_noEXT.txt ] || ! [ -s smoke_test_output_hrtf.txt ]; then echo "Error in smoke test"; fi

    - if ! [ -s smoke_test_output.txt ] || ! [ -s smoke_test_output_plc.txt ] || ! [ -s smoke_test_output_jbm_noEXT.txt ] || ! [ -s smoke_test_output_hrtf.txt ]; then echo "Error in smoke test"; exit 1; fi

    - ret_val=0

    - if cat smoke_test_output.txt | grep -c "failed"; then echo "Smoke test without PLC failed"; ret_val=1; fi

    - if cat smoke_test_output_plc.txt | grep -c "failed"; then echo "Smoke test with PLC failed"; ret_val=1; fi